Flexible Squares Not Supported: I begin to hate LJ
LiveJournal no longer supports Flexible Squares which you'll noticed 99.9% of my layouts are using. So if you like using Flexible Square layouts and are currently using one, DO NOT SWITCH from Flexible Squares because you cannot get back.
I'm going to see what I can do in the meantime. I think I can start recreating layouts in another version but I have no idea yet.